Sound Deadening in Vancouver
 

Hi all. This is my first post here, so I hope I'm not entirely out of order in terms of being in the wrong forum...

I just bought the 2009 370Z touring/sport I've been lusting after, and the only thing I want to change is to do some sound deadening insulation. Can anyone recommend a shop that will do installs, or a product available locally for DIY jobs? Every time they mention a product on the car specific forums, I can't seem to find it anywhere in the Lower Mainland...

Thanks!

You've come to the right place. Our sponsor Sounds Good Auto does that kind of stuff all the time. They are really good at what they do, too!

Cool thanks!
Anyone know of a good spray adhesive foam that can be used for sound deadening? I was thinking of doing my own wheel well undersides to see how much of a difference that makes on its own.

you drive a 370? do that have plastic inner fenders? or the fabric ones

there are many undercoats u can buy but make sure it hardens, lots just stay a sticky mess and collect shit cuz they never fully dry (sorry i dont have a name)

is it just the road noise? there are many adhesive tapes u can get that resemble dynomat but are cheaper with lesser results. if you go that route you can do the inside of you fenders (not exposed)


i did my door panels, trunk and other plastic pieces. i didnt bother measuring the sound difference but it was noticeable


the downside asides price is the weight. most of these matts/taps are very heavy. i used easily 40lbs on my car

if i had to go back and re do it i would have deff given business to SoundsGood just to save myself the time

Yep. I thought the touring edition would be quieter, but I was misinformed. The inner fenders are just plastic. Not covered by the very basic carpet cutout that covers the trunk.

I'm thinking the wheel wells are the biggest source of noise, so anything will help.

lots of people undercoat their cars also, i have driven 350's and 370s and ill agree, all you hear is road noise. its pretty annoying

You can buy fatmat online which is a similar product to dynamat. Just take out your rear trims and carpets and put the stuff on. Time consuming but very easy diy. I have 2 layers of those all over the trunk and 3 layers on the doors of my 370z. Helps a lot with exhaust drone and other deep noises, if you go to Home Depot you can also get foam insulation and stick them in the same places to dampen the slightly higher frequencies. Only downside is that it adds quite a bit of weight (the fatmat/dynamat). After applying a bunch of layers it made the inside of my Z a lot quieter.

My friend just recently sprayed a few coats of this rubberized rust prevention thing on the underside of his fenders since he took off the fender liners for his widebody. Apparently he says that helps dampen road noise as well.

Road noise for the 370z sucks dick, gets worse when you change to noisier tires too..

B-Quiet | Home They are a company out of alberta, made of high quality and they ship to your front door.

I've tried a lot of sound deadner , fatmat, rattletrap, stinger roadkill, alpha damp, and murder mat. I would stick to a butyl based deadner, cheap ebay like fatmat and rattle trap are asphalt based so when it gets hot in the summer your interior is going to smell like old gym socks,not as effective and will require multiple layers.

Is fatmat considered an eBay thing? Mine works well and doesn't smell at all, but I do have a ton of layers on

Any recommendations for an undercoat spray?

To the OP, I've successfully made my dd 07 Focus as quiet as a MB!

Seriously, you need to attack the noise from OUTSIDE the cabin for the best results. It's cheaper, faster (no need to remove interior panels etc) and quieter than applying it inside.

The two products links are below. In total I spent about $30 in materials as well as some old household bathroom towels.

Rubberized Rockerguard Undercoating | Canadian Tire

Dominion Sure Seal Brushable Undercoating | Canadian Tire

The stuff in the spray cans I applied to all 4 wheel wells as well as anywhere there was exposed metal under the car. I used about 2-3 cans when on sale.

The goop stuff in the tin I applied to the underside of my hood since I don't have an insulation pad. It dried quickly and is very thick.

in the trunk area, I removed all 3 panels (one on each side covering the wheel wells, and the floor one where the spare tire lives). I then draped the towels in these locations. The thicker the towel, the more noise it'll absorb. Don't worry too much about securing it down. I'd recommend removing the spare (if you have one) and spreading out some towels there too. I only have one behind the rear seat, but will probably add more to that area in the near future. Dont' worry, once everything is back together, nobody but you will know it's back there

The result? FAR quieter than this car has ever been! I was in the process of buying an older lexus/Avalon but decided to do this instead just to see if it would work.

Downside?
I used to enjoy the noise from the stock exhaust when at WOT. It was raspy, but kinds sporty at the same time. Now I still hear the exhaust, but it's not as pronounced as before, and I don't have to wear ear plugs when driving on the highway!

Anymore q's? PM me

Yes. This is the info I was looking for. Thanks

use paintable undercoating/rockerguard. otherwise every time youre working under your car youll get covered in the shit as the non paintable remains tacky for ever. Especially around sources of heat

no worries.

The thick stuff dries in a matter of minutes. The stuff in the cans dries in about 4-5 hours. Just make sure to avoid the exhaust and heat shields and you'll be fine

just wonder, how do you type your user on other computers?